Lingerie model Sarah Stage has stirred up controversy by posting an Instagram shot of her ultra sexy 6 pack. [caption id="attachment_74466" align="aligncenter" width="213"] 3 weeks after the birth of her son, James Hunter[/caption] The beauty, flaunting a Fly Nation bikini in the pic, gave birth just 3 weeks ago to a baby boy. [caption id="attachment_74467" align="aligncenter" width="268"] Sarah holding James just 9 days after giving birth[/caption] Sarah welcomed son James Hunter into the world on April 14. Her pregnancy body was subject of criticism as she maintained her fitness routine and solid abs. While some feared this could harm the baby, James Hunter was born healthy and happy. The new mom expresses her love for her son on her Instagram, sharing pics of the precious baby to adoring fans. Female followers are singing Sarah's praises and wanting to know how to achieve such a fit frame during and after pregnancy. [caption id="attachment_74464" align="aligncenter" width="300"] Sarah, 9 months pregnant rocking her beach bod[/caption] Fans love following Sarah's journey into motherhood, as she has a follower base of 1.7 Million. What do you think of this fit mama? She is an inspiration or pushing it too far?